<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Simple Flex Layout with Menu</title>
  <style>
    body {
      background-color: blueviolet;
    }
  </style>
</head>
<body>
  <form action="insert.php" method="get">
    书名：<input type="text" name="book_name">
    <br>
    出版社: <input type="text" name="publish">
    <br>
    <button type="submit" name="submit" value="submit">提交</button>
  </form>
</body>
</html>
